汽車沖壓件生產中采用了大量的冷沖壓工藝適合汽車沖壓件工業多品種、大批量生產的需要。在中、重型汽車中，大部分覆蓋件如車身外板等，及一些承重和支撐件如車架、車廂等汽車零部件都是汽車沖壓件。用于冷沖壓的鋼材主要是鋼板和鋼帶，占整車鋼材消耗量的72.6%，冷沖壓材料與汽車沖壓件生產的關系十分密切，材料的好壞不僅決定產品的性能，更直型槽模具 一次性止血帶 保定水處理設備 一次性止血帶 保定空壓機 北京真空泵接影響到汽車沖壓件工藝的過程設計，影響到產品的質量、成本、使用壽命和生產組織，因此合理選用材料是一個重要而復雜的工作。

A large number of cold stamping processes have been used in the production of automotive stamping parts, which are suitable for the needs of various kinds and mass production of automotive stamping parts industry. In medium and heavy trucks, most of the panels, such as body panels, and some load-bearing and supporting parts such as frame, carriage and other automotive parts are automotive parts. The steel used for cold stamping is mainly steel sheet and strip, accounting for 72.6% of the total steel consumption of the vehicle. The cold stamping material is closely related to the production of automobile stamping parts. The quality of the material not only determines the performance of the product, but also directly affects the process design of automobile stamping parts, and affects the quality, cost, service life and production organization of the product. Therefore, the rational selection of materials is one of the most important factors. An important and complex task